Question

many different types of mutations can occur within the body. tay-sachs disease is a deadly disorder that is caused by a missing codon in the gene coding for production of the hex a enzyme in the body. which type of mutation is responsible for causing tay-sachs disease? substitution replacement insertion deletion

Explanation:

• Substitution: Involves replacing one nucleotide with another. This is not the case here as it's about a missing codon.
• Replacement: Similar to substitution conceptually and not relevant to a missing codon.
• Insertion: Adds nucleotides. Opposite of what's described (missing a codon).
• Deletion: Removes nucleotides. A missing codon (which is a sequence of three nucleotides) fits the deletion mutation type.

Answer:

deletion